Out-of-bounds write in Linux kernel - CVE-2026-80580

Vulnerability identifier: #VU145904

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-80580

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to an out-of-bounds write in the fbdev sysfs mode output handling in drivers/video/fbdev/core/fbsysfs.c when processing a long modelist for sysfs output. A local user can trigger sysfs mode listing with a sufficiently long modelist to execute arbitrary code.

Linux kernel
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME
SUSE Linux Enterprise Server 11
kernel-default-devel-debuginfo
kernel-docs
kernel-trace-base
kernel-default-devel
kernel-syms
kernel-ec2-base
kernel-xen-devel-debuginfo
kernel-trace-devel
kernel-ec2-debuginfo
kernel-xen-devel
kernel-default-debugsource
kernel-ec2-devel
kernel-xen-debuginfo
kernel-default-debuginfo
kernel-xen
kernel-xen-debugsource
kernel-default-base
kernel-source
kernel-xen-base
kernel-ec2-devel-debuginfo
kernel-trace-devel-debuginfo
kernel-trace-debugsource
kernel-trace-debuginfo
kernel-ec2-debugsource
kernel-default
kernel-ec2
kernel-trace

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-default-devel-debuginfo - update to 3.0.101-108.220.1
kernel-docs - update to 3.0.101-108.220.1
kernel-trace-base - update to 3.0.101-108.220.1
kernel-default-devel - update to 3.0.101-108.220.1
kernel-syms - update to 3.0.101-108.220.1
kernel-ec2-base - update to 3.0.101-108.220.1
kernel-xen-devel-debuginfo - update to 3.0.101-108.220.1
kernel-trace-devel - update to 3.0.101-108.220.1
kernel-ec2-debuginfo - update to 3.0.101-108.220.1
kernel-xen-devel - update to 3.0.101-108.220.1
kernel-default-debugsource - update to 3.0.101-108.220.1
kernel-ec2-devel - update to 3.0.101-108.220.1
kernel-xen-debuginfo - update to 3.0.101-108.220.1
kernel-default-debuginfo - update to 3.0.101-108.220.1
kernel-xen - update to 3.0.101-108.220.1
kernel-xen-debugsource - update to 3.0.101-108.220.1
kernel-default-base - update to 3.0.101-108.220.1
kernel-source - update to 3.0.101-108.220.1
kernel-xen-base - update to 3.0.101-108.220.1
kernel-ec2-devel-debuginfo - update to 3.0.101-108.220.1
kernel-trace-devel-debuginfo - update to 3.0.101-108.220.1
kernel-trace-debugsource - update to 3.0.101-108.220.1
kernel-trace-debuginfo - update to 3.0.101-108.220.1
kernel-ec2-debugsource - update to 3.0.101-108.220.1
kernel-default - update to 3.0.101-108.220.1
kernel-ec2 - update to 3.0.101-108.220.1
kernel-trace - update to 3.0.101-108.220.1

• https://git.kernel.org/stable/c/873a1aa15c313263f2e18b38cf525623cc4fabf6
• https://git.kernel.org/stable/c/d15d51fb26e830af58f3f21964f1c09c239077ea

• Out-of-bounds write in Linux kernel fbdev core driver
• SUSE update for the Linux Kernel